CN208762528U - Mechanical totally-enclosed ash-discharging device with pressure - Google Patents

Abstract

Grey technique and device are unloaded in a kind of mechanical totally-enclosed with pressure, concentrate aperture on ash cellar end socket, grey conduit is unloaded to protrude into from the hole, the defeated ash gas unloaded in grey technique is pipelined to concentration ash cellar, so that defeated ash gas is connected to release pipeline, when the net blast furnace gas main pipe of release pipeline connection low pressure, by concentrating the cloth bag in ash cellar to be filtered dust under the pressure difference effect of ash discharging system gas, filtered defeated ash gas enters the net blast furnace gas main pipe of low pressure by release pipeline and is recycled defeated ash gas；It concentrates ash cellar to unload ash to carry out by grey strategy is unloaded, further includes incubation step and reverse gas cleaning step.Its advantage is that dedusting ash in blast furnace dry method dust device bottom of box taper ash bucket can be made smoothly to draw off by the mechanical movement of defeated grey equipment and the double action of the pressure difference of ash discharging system gas, have unload grey process it is smooth, without blocking, No leakage, unload it is grey thoroughly, ash discharging system equipment failure rate is low, maintenance is easy to use, cabinet operating rate is high, the cloth bag service life is long.

Description

Mechanical totally-enclosed ash-discharging device with pressure

Technical field

The present invention relates to the technical field of Ferrous Metallurgy, in particular to grey technique and dress are unloaded in a kind of mechanical totally-enclosed with pressure It sets.

Background technique

Unloading grey technique is essential a part in blast furnace gas drying bag dust removing process system, major function It is to draw off the intracorporal blast furnace dedusting ash of cloth bag case in time, guarantees the continuous service of dust collecting process system.It is mechanical with pressure complete close Close and unload grey technique and device and can guarantee that unloading grey process goes on smoothly, unload it is grey it is smooth, without blocking, to entire dust collecting process system Reliably, efficient operation has highly important effect.

The half clear height producer gas that gravitational precipitator or cyclone dust collectors (rough dedusting) come passes through the further mistake of bag filter After filtering (fine dedusting), low pressure clear height producer gas can be used or entered after pressure regulation valve group pressure regulation for TRT turbine power generation unit Pipe network.The dedusting of blast furnace gas ash that bag filter filters down is collected in the ash bucket of the bag filter bottom of box, need through Ash discharging system is drawn off in time, to guarantee that dust removal process persistently carries out.

Currently, blast furnace gas drying bag dust removing technology is generallyd use in steel industry, unload grey technique mainly use it is general It is logical mechanically to unload ash and two kinds of techniques of Pneumatic ash conveying.

Standard machinery formula unloads grey technique and carries out unloading ash, deduster case using the mechanical movement of common burying scraper chain scraper It is equipped with intermediate ash cellar between body and embedded scraper transporter, it is slow to unload grey speed.Entire ash discharging system is by the way of external thermal insulation: first is that work Skill pipeline and equipment outsourcing thermal insulation material；Steam pipe coil tracing thermal-insulating is used outside ash cellar taper ash bucket second is that concentrating.This two kinds Heat preserving mode heat insulation effect is bad, therefore concentrates dedusting ash in ash cellar that outward transport must and be discharged, and otherwise blast furnace dedusting ash is possible to plate Knot, it is unsmooth to cause to unload ash, influences to produce, concentrates ash cellar generally to take timing ash discharge in actual production, and frequency is too high, about 3 times/ It, labor workload is larger.Meanwhile common burying scraper chain scraper cannot all scrape dedusting ash, cause commonly to bury and scrape Accumulation dedusting ash is easy in trigger, the easy cooling of the dedusting ash of accumulation is hardened, and scratch board machine chain arch camber is caused even to destroy.

Pneumatic ash conveying technique has the defeated ash of dilute phase and the defeated grey two kinds of technique of concentrated phase, and the defeated grey technique ash gas of dilute phase is than low, power gas Source consumption is big, and ash conveying pipe caliber is big, and flow velocity is fast, and ash conveying pipe and valve arrangement are easy to wear.The defeated grey technique ash gas ratio of concentrated phase is big, Power gas source consumption is relatively small, but defeated grey speed is slow, and ash conveying pipe easily blocks, and is not easily cleaned.

A kind of " blast furnace gas dry bag style dust collector is disclosed in Chinese patent application publication No. CN106636507A Tool formula pressure unloads grey technique and device ", first unloading valve of the process unit by dust collector box body lower part, intermediate ash cellar, second Unloading valve, embedded scraper transporter, concentration ash cellar, third unloading valve composition, concentration ash cellar is by the first coal gas relief tube and each Dust collector box body lower part dust and gas room is connected, and each dust collector box body top air-purifying chamber passes through the second pressure-relief valve and the net blast furnace coal of low pressure Gas general pipeline is connected.There is some shortcomings for this technique: (1) when some dust collector box body unloads ash, it is necessary to separately have a deduster Cabinet stops main coal gas filtration operation and serves as release cabinet, reduces the operating rate of dust collector box body；(2) concentrate ash cellar necessary It is installed on the lower section of burying scraper discharge port, increases the design height in entire dry method dust building, dry method dust building project cost It is higher；(3) intermediate ash cellar functions only as pipeline effect, has little significance, but increase the design height in dry method dust building, to increase Project cost is added.

Summary of the invention

It is logical that it is an object of the invention to provide a kind of dedusting ash made in blast furnace dry method dust device bottom of box taper ash bucket It crosses the mechanical movement of defeated grey equipment and the double action of the pressure difference of ash discharging system gas is smoothly drawn off, have and unload grey process stream Freely, without blocking, No leakage, unload it is grey thoroughly, ash discharging system equipment failure rate is low, maintenance is easy to use, cabinet operating rate is high, cloth bag Grey technique and device are unloaded in the mechanical totally-enclosed with pressure that service life is long, capital expenditure is small.

Solution of the invention is such that

Grey technique is unloaded in a kind of mechanical totally-enclosed with pressure, comprising steps of

(1) defeated ash gas supplying step: being pipelined to concentration ash cellar for the defeated ash gas unloaded in grey technique, so that Defeated ash gas is connected to release pipeline, and when the net blast furnace gas main pipe of release pipeline connection low pressure, defeated ash gas is in ash discharging system gas By concentrating the cloth bag in ash cellar to be filtered dust under the action of the pressure difference of body, filtered defeated ash gas passes through release Pipeline enters the net blast furnace gas main pipe of low pressure and is recycled；

(2) it concentrates ash cellar to unload grey strategy: being operated by following sequential steps:

1) pipeline of the ash cellar connection net blast furnace gas main pipe of high pressure is concentrated in cutting, and cutting concentrates ash cellar to be connected to half net blast furnace coal Gas inlet pipe road；

2) the release pipeline for concentrating that connection low pressure clear height producer gas is always connected at the top of ash cellar is connected, makes to concentrate coal gas in ash cellar Pressure is unloaded to, completion concentration ash cellar release identical as the net blast furnace gas main pipe of low pressure；

3) pressure resistant type bucket elevator and pressure resistant type embedded scraper transporter in grey technique are unloaded in starting；

4) by dust collector box body blast furnace dedusting ash and half clear height producer gas by pressure resistant type bucket elevator and pressure resistant type Embedded scraper transporter is input to concentration ash cellar by release pipeline, so that defeated ash gas is connected to release pipeline, when release pipeline connects When the net blast furnace gas main pipe of logical low pressure, defeated ash gas is under the action of the pressure difference of ash discharging system gas by concentrating in ash cellar Dust is filtered by cloth bag, and filtered defeated ash gas enters the net blast furnace gas main pipe of low pressure by release pipeline and returned It receives；

5) start humidifier, and successively open the humidifier batcher and humidifier feed for concentrating ash cellar outlet lower part The stop valve on machine top, dedusting ash are concentrating the pressure difference and dedusting ash self gravity that blast furnace gas and atmosphere are formed in ash cellar Go out to transport outward via stop valve, humidifier batcher, humidifier humidification heel row under effect.

More specific technical solution further include: further include incubation step after unloading ash: by half clear height producer gas of high temperature from Half clear height producer gas inlet pipeline, which introduces, to be concentrated to concentrating ash cellar to keep the temperature inside ash cellar, through concentrating the Bag filter in ash cellar The net blast furnace gas pipeline network of high pressure is entered by concentration ash cellar top high-voltage clear height producer gas outlet conduit afterwards.

It is further: to further include reverse gas cleaning step: when concentration ash cellar pressure differential detection instrument detects the grey film on cloth bag It thickens influence filtering, concentrate ash cellar in grey state is not unloaded, need to be closed when concentrating ash cellar to keep the temperature using half clear height producer gas It concentrates ash cellar top high-voltage clear height producer gas outlet conduit and concentrates half clear height producer gas inlet pipeline of ash cellar bottom, connect and concentrate The net blast furnace gas main pipe of low pressure at the top of ash cellar concentrates grey silo roof wait concentrate after gas pressure drops to specified pressure in ash cellar Portion and high pressure clear height producer gas outlet conduit are connected, and carry out reverse gas cleaning to the cloth bag using high pressure clear height producer gas；Blowback After, it will concentrate and disconnected at the top of ash cellar with the net blast furnace gas main pipe of low pressure, ash cellar bottom will be concentrated to connect half clear height producer gas Inlet pipeline, cloth bag are normally carried out filtering again.

A kind of mechanical totally-enclosed ash-discharging device with pressure, including dust collector box body, pressure resistant type embedded scraper transporter, pressure resistant type Bucket elevator concentrates ash cellar, concentrates aperture on ash cellar end socket, unloads grey conduit and protrude into from the hole, and ash cellar will be concentrated by unloading ash The discharge port of conduit connection pressure resistant type bucket elevator.

It is further: the release pipeline of ash cellar upper end being concentrated to be connected to low pressure clear height producer gas by the first cutting valve gear General pipeline concentrates the high pressure clear height producer gas outlet conduit of ash cellar upper end to be connected to high pressure clear height producer gas by the second cutting valve gear General pipeline concentrates ash cellar warehouse bottom to cut off valve gear by third and is connected to half clear height producer gas inlet pipeline.

Further: the ash hole of the taper ash bucket for concentrating ash cellar connects humidifier batcher by stop valve, will Dedusting ash is sent to humidifier.

Further: the dust-removing box is connected to pressure resistant type by self-locking ash discharge clock valve, star-shaped ash unloading valve and buries scraper plate Conveyer.

Further, it is described unload grey conduit and pass perpendicularly through the end socket be disposed axially in the concentration ash cellar, it is described to unload The lower port of grey conduit one is lower than the lower port of the cloth bag.

It is an advantage of the invention that unloading grey process equipment and pipeline has bearing capacity, blast furnace dry method dust device cabinet bottom can be made Dedusting ash in portion's taper ash bucket is suitable by the mechanical movement of defeated grey equipment and the double action of the pressure difference of ash-transmission system gas Benefit is drawn off, and it is fast to unload grey speed, high-efficient.

Detailed description of the invention

Fig. 1 is that grey technique and plant system drawing are unloaded in mechanical totally-enclosed with pressure of the invention；.

Fig. 2 is concentration ash cellar device structure schematic diagram of the invention.

Appended drawing reference in figure are as follows: 1, dust collector box body；2, self-locking ash discharge clock valve；3, star-shaped ash unloading valve；4, pressure resistant type buries Drag conveyor；5, pressure resistant type bucket elevator；6, ash cellar is concentrated；7, stop valve；8, humidifier batcher；9, humidifier；10, First cutting valve gear；11, the second cutting valve gear；12, third cuts off valve gear；13, safety valve；14, end socket；15, tubular Warehouse；16, taper ash bucket；17, cloth bag structure；18, lattice board；19, cloth bag；20, grey conduit is unloaded；21, safety valve connection is short Pipe；22, release pipeline；23, high pressure clear height producer gas outlet conduit；24, half clear height producer gas inlet pipeline；25, grey import is unloaded Pipeline.

Specific embodiment

Grey technique is unloaded in a kind of mechanical totally-enclosed with pressure of the present invention, comprising steps of

(1) defeated ash gas supplying step: being pipelined to concentration ash cellar for the defeated ash gas unloaded in grey technique, so that Defeated ash gas is connected to release pipeline, and when the net blast furnace gas main pipe of release pipeline connection low pressure, defeated ash gas is in ash discharging system gas By concentrating the cloth bag in ash cellar to be filtered dust under the action of the pressure difference of body, filtered defeated ash gas passes through release Pipeline enters the net blast furnace gas main pipe of low pressure and is recycled；

(2) it concentrates ash cellar to unload grey strategy: being operated by following sequential steps:

1) pipeline of the ash cellar connection net blast furnace gas main pipe of high pressure is concentrated in cutting, and cutting concentrates ash cellar to be connected to half net blast furnace coal Gas inlet pipe road；

2) the release pipeline for concentrating that connection low pressure clear height producer gas is always connected at the top of ash cellar is connected, makes to concentrate coal gas in ash cellar Pressure is unloaded to, completion concentration ash cellar release identical as the net blast furnace gas main pipe of low pressure；

3) pressure resistant type bucket elevator and pressure resistant type embedded scraper transporter in grey technique are unloaded in starting；

4) by dust collector box body blast furnace dedusting ash and half clear height producer gas by pressure resistant type bucket elevator and pressure resistant type Embedded scraper transporter is input to concentration ash cellar by release pipeline, so that defeated ash gas is connected to release pipeline, when release pipeline connects When the net blast furnace gas main pipe of logical low pressure, defeated ash gas is under the action of the pressure difference of ash discharging system gas by concentrating in ash cellar Dust is filtered by cloth bag, and filtered defeated ash gas enters the net blast furnace gas main pipe of low pressure by release pipeline and returned It receives；

5) start humidifier, and successively open the humidifier batcher and humidifier feed for concentrating ash cellar outlet lower part The stop valve on machine top, dedusting ash are concentrating the pressure difference and dedusting ash self gravity that blast furnace gas and atmosphere are formed in ash cellar Go out to transport outward via stop valve, humidifier batcher, humidifier humidification heel row under effect.

Further include incubation step after unloading ash: half clear height producer gas of high temperature is drawn from half clear height producer gas inlet pipeline Enter to concentrate and concentration ash cellar is kept the temperature inside ash cellar, it is net by concentration ash cellar top high-voltage after concentrating the Bag filter in ash cellar Blast furnace gas outlet conduit enters the net blast furnace gas pipeline network of high pressure.

It further include reverse gas cleaning step: when concentration ash cellar pressure differential detection instrument detects that the grey film on cloth bag thickens influence Filtering concentrates ash cellar in grey state is not unloaded, and need to close the grey silo roof of concentration when concentrating ash cellar to keep the temperature using half clear height producer gas Portion's high pressure clear height producer gas outlet conduit and concentration half clear height producer gas inlet pipeline of ash cellar bottom, connect and concentrate at the top of ash cellar The net blast furnace gas main pipe of low pressure is concentrated net with high pressure at the top of ash cellar wait concentrate after gas pressure drops to specified pressure in ash cellar Blast furnace gas outlet conduit is connected, and carries out reverse gas cleaning to the cloth bag using high pressure clear height producer gas；After blowback, it will collect It is disconnected at the top of middle ash cellar with the net blast furnace gas main pipe of low pressure, ash cellar bottom will be concentrated to connect half clear height producer gas inlet pipeline, cloth Bag is normally carried out filtering again.

As shown in Figure 1, 2, a kind of mechanical totally-enclosed ash-discharging device with pressure, including dust collector box body 1, pressure resistant type bury scraper plate Conveyer 4, concentrates ash cellar 6 at pressure resistant type bucket elevator 5, concentrates aperture on 6 end socket 14 of ash cellar, unloads grey conduit 20 and stretch from the hole Enter, the discharge port that ash cellar 6 will be concentrated to be connected to pressure resistant type bucket elevator 5 by unloading grey conduit 20.

Concentrating the release pipeline 22 of 6 upper end of ash cellar by the first cutting valve gear 10, to be connected to low pressure clear height producer gas total Pipe concentrates the high pressure clear height producer gas outlet conduit 23 of 6 upper end of ash cellar to be connected to high pressure clear height furnace by the second cutting valve gear 11 Gas main concentrates 6 warehouse of ash cellar, 15 bottom to cut off valve gear 12 by third and is connected to half clear height producer gas inlet pipeline 24.

The ash hole of the taper ash bucket 16 for concentrating ash cellar 6 connects humidifier batcher 8 by stop valve 7, by dedusting Ash is sent to humidifier 9.

The dust-removing box 1 is connected to pressure resistant type embedded scraper transporter by self-locking ash discharge clock valve 2, star-shaped ash unloading valve 3 4。

Below with Fig. 1, the present invention is described in detail for structure shown in Fig. 2:

Grey technique is unloaded in the totally-enclosed mechanically with pressure of the blast furnace gas dry dusting of structure shown in Fig. 1, it includes that following step is poly-:

(1) construction unloads defeated ash gas release recycling step in grey technique and gathers: concentrating and cloth bag structure 17 is arranged in ash cellar 6, concentrate A release pipeline 22, low pressure clear height furnace after the release pipeline 22 and TRT or pressure regulation valve group is arranged in aperture on 6 end socket 14 of ash cellar Gas main is connected to, and the first disconnecting device device 10 is arranged on the release pipeline 22.Enter with dedusting ash and concentrates ash cellar 6 Half clear height producer gas enters the net blast furnace gas main pipe of low pressure as clear height producer gas after filtering by the cloth bag 19 and is recycled.

(2) grey strategy is unloaded, is operated by following sequential steps:

1) the second cutting valve gear 11 and concentration ash concentrated on 6 top high-voltage clear height producer gas outlet conduit of ash cellar are closed Third on half clear height producer gas inlet pipeline of storehouse 6 tubular warehouse, 15 bottom cuts off valve gear 12:

2) the first stop valve dress on the release pipeline 22 for concentrating 6 top of ash cellar to be always connected to low pressure clear height producer gas is opened 10 are set, makes to concentrate gas pressure in ash cellar 6 to unload to, completion concentration ash cellar 6 release identical as the net blast furnace gas main pipe of low pressure；

3) starting pressure resistant type bucket elevator 5 and pressure resistant type embedded scraper transporter 4；

4) star-shaped ash unloading valve 3 and self-locking ash discharge clock valve 2, blast furnace dedusting ash and half clear height in dust collector box body 1 are opened Producer gas passes sequentially through self-locking ash discharge clock valve 2, star-shaped ash unloading valve 3, pressure resistant type embedded scraper transporter 4, resistance to Die mould bucket elevator 5 enters together concentrates ash cellar 6, then half clear height producer gas through concentration in ash cellar 6 after Bag filter at It is returned for high pressure clear height producer gas from the release pipeline 22 concentrated at the top of ash cellar 6 into the net blast furnace gas main pipe of low pressure It receives；

5) start humidifier 9, and successively open the humidifier batcher 8 and the humidifier for concentrating ash cellar 6 to export lower part The stop valve 7 on 8 top of batcher, dedusting ash concentrate in ash cellar 6 blast-furnace gas pressure difference and under the action of self gravity via Stop valve 7, humidifier batcher 8, humidifier 9 humidify heel row and go out to transport outward.

6) dust collector box body 1 unloads after the completion of ash (by 1 body bottom ash position pointer detection of deduster case), closes the deduster The self-locking ash discharge clock valve and star-shaped ash unloading valve of lower box open the self-locking ash discharge clock valve of next dust collector box body bottom With star-shaped ash unloading valve, next dust collector box body starts to unload ash；

7) step 6) is repeated, until the dedusting ash in the last one dust collector box body is unsnatched.Close last deduster case The self-locking ash discharge clock valve and star-shaped ash unloading valve of body bottom；

8) (by the grey position pointer detection of concentration ash cellar) after concentrating the dedusting ash in ash cellar to unsnatch, closing stop valve 7, Humidifier batcher 8, humidifier 9；The the first cutting valve gear 10 concentrated on 6 top pressure relief pipeline 22 of ash cellar is closed, grey knot is unloaded Beam.

After unloading ash, the concentration ash cellar 6 need to be kept the temperature using half clear height producer gas, prevent from being adhered to the cloth Dedusting ash on bag 19 is low and hardened because of temperature, to cause 19 deashing of cloth bag difficult, influences the use of cloth bag 19.Heat preservation step is poly- Are as follows: open the second cutting valve gear 11 and concentration ash cellar 6 concentrated on 6 top high-voltage clear height producer gas outlet conduit 23 of ash cellar Third on 15 bottom of shape warehouse, half clear height producer gas inlet pipeline 24 cuts off valve gear 12.Half clear height producer gas of high temperature is net from half Blast furnace gas inlet pipeline 24, which enters, to be concentrated to concentrating ash cellar 6 to keep the temperature inside ash cellar 6, through concentrating the cloth bag 19 in ash cellar 6 The net blast furnace gas pipeline network of high pressure is entered by 6 top high-voltage clear height producer gas outlet conduit 23 of concentration ash cellar after filtering.

It (can be detected by 6 pressure differential detection instrument of concentration ash cellar when the grey film on the cloth bag 19 thickens influence filtering Out), when concentrating ash cellar 6 to keep the temperature using half clear height producer gas (ash cellar 6 need to be concentrated to be at this time and do not unload grey state), closed and concentrate The second cutting valve gear 11 and concentration 6 tubular warehouse of ash cellar, 15 bottom on 6 top high-voltage clear height producer gas outlet conduit 23 of ash cellar Third on half clear height producer gas inlet pipeline 24 of portion cuts off valve gear 12, opens and concentrates on 6 top pressure relief pipeline 27 of ash cellar First cutting valve gear 10 is opened wait concentrate after gas pressure drops to specified pressure in ash cellar 6 and concentrates 6 top high-voltage of ash cellar The second cutting valve gear 11 on clear height producer gas outlet conduit 23, carries out anti-the cloth bag 19 using high pressure clear height producer gas Blowing-out ash.After blowback, the first cutting valve gear 10 concentrated on 6 top pressure relief pipeline 22 of ash cellar is closed, collection is then opened Third on 15 bottom of middle 6 tubular warehouse of ash cellar, half clear height producer gas inlet pipeline 24 cuts off valve gear 12, and the cloth bag 19 is again Filtering can be normally carried out.

Fig. 1, mechanical totally-enclosed ash-discharging device with pressure shown in Fig. 2, ash-discharging device successively includes self-locking by process flow Formula ash discharge clock valve 2, pressure resistant type embedded scraper transporter 4, pressure resistant type bucket elevator 5, concentrates ash cellar 6, cutting at star-shaped ash unloading valve 3 Valve 7, humidifier batcher 8, humidifier 9.All devices are connected by pipeline.Each 1 bottom of dust collector box body has one Self-locking ash discharge clock valve 2, each 2 bottom of self-locking ash discharge clock valve are a star-shaped ash unloading valves 3, all star-shaped ash unloading valves 3 with The feed inlet branch pipe of the corresponding number of the one pressure resistant type burying scraper 4 in bottom is connected.Wherein, aperture on 6 end socket 14 of ash cellar is concentrated Grey conduit is unloaded in setting one, unloads grey conduit upper port and is connected by unloading grey inlet pipeline with pressure resistant type bucket elevator discharge port, Pressure resistant type bucket lifting machine inlet is connected with pressure resistant type embedded scraper transporter discharge port by pipeline.Ash cellar lower part is concentrated to unload ash Mouth is connected by stop valve, humidifier batcher with humidification machine inlet.Concentrate aperture on ash cellar end socket that a piece relief tube is set Road, the release pipeline are connected to the net blast furnace gas main pipe of low pressure after TRT or pressure regulation valve group, and cutting is arranged on the release pipeline Device device one.Concentrate the aperture of ash cellar cylinder body bottom that one and half purified gas inlet pipelines, the half clear height producer gas import are set Pipeline is connected to half net blast furnace gas main pipe, and third is arranged on the half clear height producer gas inlet pipeline and cuts off valve gear.

Ash cellar 6 is concentrated to include tubular warehouse 15, block the end socket 14 at 15 upper opening of tubular warehouse and block in tubular The taper ash bucket 16 of 15 lower opening of warehouse.A safety valve connection short tube 21 is arranged in aperture on the end socket 14, in the peace Full valve connects 26 end of short tube and safety valve 13 is arranged.The concentration ash cellar 6 is internally provided with cloth bag structure 17.The cloth bag structure 17 include the lattice board 18 that circumference is fixed on 15 inner wall of tubular warehouse and the multiple cloth being hung on the lattice board 18 Bag 19.Multiple cloth bags 19 are arranged on the lattice board 18 along the axially spaced-apart of the tubular warehouse 15.The concentration ash Storehouse 6 can bear the operating pressure of 0 ~ 0.3MPa at 300 DEG C.

The pressure resistant type bucket elevator 5 can bear the operating pressure of 0 ~ 0.3MPa at 300 DEG C.

The pressure resistant type burying scraper 4 can bear the operating pressure of 0 ~ 0.3MPa at 300 DEG C.

It is described unload grey conduit 20 and pass perpendicularly through the end socket 14 be disposed axially in the concentration ash cellar 6, the ash that unloads is led The lower port of pipe 20 1 is lower than the lower port of the cloth bag 19.

Fig. 1,2 shown devices working principle be:

When unloading ash, upper first for the release pipeline 22 for concentrating 6 top of ash cellar to be connected to the net blast furnace gas main pipe of low pressure is cut Disconnected valve gear 10 is in the open state, and concentrates the second cutting on the high pressure clear height producer gas outlet conduit 23 at 6 top of ash cellar Third on valve gear 11 and half clear height producer gas inlet pipeline 24 of concentration 6 tubular warehouse of ash cellar, 15 bottom cuts off valve gear 12 It is in closed state, concentrates gas pressure in ash cellar 6 that can reduce at this time, the self-locking for opening 1 bottom of dust collector box body unloads ash After clock valve 2 and star-shaped ash unloading valve 2, the half clear height producer gas in half clear height producer gas and concentration ash cellar 6 in dust collector box body 1 is just It will form that power is poor, the dedusting ash of 1 bottom of dust collector box body is unloaded under the double action of pressure difference and self gravity by self-locking Grey clock valve 2, star-shaped ash unloading valve 3 are unloaded to pressure resistant type scraper plate conveying 4, then pass through the mechanical movement of pressure resistant type drag conveyor 4 Double action with pressure difference is unloaded to pressure resistant type bucket elevator 5, then, machine of the dedusting ash in pressure resistant type bucket elevator 5 It is delivered to and is concentrated in ash cellar 6 under tool movement effect.Meanwhile half clear height producer gas in dust collector box body 1 also with dedusting ash successively Entered by self-locking ash discharge clock valve 2, star-shaped ash unloading valve 3, pressure resistant type embedded scraper transporter 4, pressure resistant type bucket elevator 5 and is concentrated Then ash cellar becomes high pressure clear height producer gas and is unloaded described in the top of ash cellar 6 from concentrating by concentrating after cloth bag 19 filters in ash cellar 6 Pressure pipeline 22 is recycled into the net blast furnace gas pipeline network of low pressure.

When concentrate ash cellar 6 carry out unloading ash when, since the discharge port of humidifier 9 is communicated with atmosphere, concentrate ash cellar 6 in coal gas and Atmosphere forms pressure difference, finally, dedusting ash is fed under the double action of pressure difference and self gravity through stop valve 7, humidifier Machine 8, humidifier 9 humidify heel row and go out to transport outward.

Particular embodiments described above has carried out further the purpose of the present invention, technical scheme and beneficial effects It is described in detail, it should be understood that the above is only a specific embodiment of the present invention, the protection being not intended to limit the present invention Range.It particularly points out, to those skilled in the art, all within the spirits and principles of the present invention, that is done any repairs Change, equivalent replacement, improvement etc., should all be included in the protection scope of the present invention.

Claims (5)

1. a kind of mechanical totally-enclosed ash-discharging device with pressure, including it is dust collector box body (1), pressure resistant type embedded scraper transporter (4), resistance to Die mould bucket elevator (5) concentrates ash cellar (6), it is characterised in that: concentrates aperture on ash cellar (6) end socket (14), unloads grey conduit (20) it is protruded into from the hole, the discharge port that ash cellar (6) will be concentrated to be connected to pressure resistant type bucket elevator (5) by unloading grey conduit (20).

2. mechanical totally-enclosed ash-discharging device with pressure according to claim 1, it is characterised in that: concentrate ash cellar (6) upper end Release pipeline (22) the net blast furnace gas main pipe of low pressure is connected to by the first cutting valve gear (10), concentrate ash cellar (6) upper end High pressure clear height producer gas outlet conduit (23) by second cutting valve gear (11) be connected to the net blast furnace gas main pipe of high pressure, concentrate Ash cellar (6) warehouse (15) bottom is connected to half clear height producer gas inlet pipeline (24) by third cutting valve gear (12).

3. mechanical totally-enclosed ash-discharging device with pressure according to claim 1, it is characterised in that: the concentration ash cellar (6) Taper ash bucket (16) ash hole by stop valve (7) connection humidifier batcher (8), dedusting ash is sent to humidifier (9).

4. mechanical totally-enclosed ash-discharging device with pressure according to claim 1, it is characterised in that: the dust-removing box (1) Pressure resistant type embedded scraper transporter (4) are connected to by self-locking ash discharge clock valve (2), star-shaped ash unloading valve (3).

5. mechanical totally-enclosed ash-discharging device with pressure according to claim 1, it is characterised in that: described to unload grey conduit (20) It passes perpendicularly through the end socket (14) to be disposed axially in the concentration ash cellar (6), the lower port for unloading grey conduit (20) one is low Lower port in cloth bag (19).